﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int points = 70;
            switch (points / 10)
            {
                case 10:
                    Console.WriteLine("满分");
                    break;
                case 9:
                    Console.WriteLine("优秀");
                    break;
                case 8:
                    Console.WriteLine("良好");
                    break;
                case 7:
                    Console.WriteLine("及格");
                    break;
                case 6:
                    Console.WriteLine("及格");
                    break;
                case 5:
                    Console.WriteLine("不及格");
                    break;
                case 4:
                    Console.WriteLine("不及格");
                    break;
                case 3:
                    Console.WriteLine("不及格");
                    break;
                case 2:
                    Console.WriteLine("不及格");
                    break;
                case 1:
                    Console.WriteLine("不及格");
                    break;


                    if (true)
                    {
                        Console.WriteLine("yes？");
                    }
                    if (true)
                    {
                        Console.WriteLine("正确");
                    }
                    else
                    {
                        Console.WriteLine("错误");
                    }
            }

        }
    }
}
        
    

